Medical Instrument

Abstract

A medical instrument which allows ligation in a living body to be efficiently carried out in safety by only one operator, or one operator and an assistant is provided. The medical instrument comprises a puncture needle for surgical suture insertion (20); a puncture needle for surgical suture gripping (30); a stylet (40) which is slidably inserted into the inside of the puncture needle for surgical suture gripping (30); and a fixing member (50) to which the puncture needle for surgical suture insertion (20) and the puncture needle for surgical suture gripping (30) are fixed, and when an annular member (42) which is formed at the distal end of the stylet (40) is projected from the distal end of the puncture needle for surgical suture gripping (30), the annular member (42) is extended such that the central axis of the puncture needle for surgical suture insertion (20) or its extension line penetrates through the inside of the annular member (42), with a feeding-out mechanism (60) which sequentially feeds out a surgical suture (S) toward the distal end thereof being provided on the proximal end side of the puncture needle for surgical suture insertion (20), and a projection mechanism (70) which causes the annular member (42) accommodated in the inside of the puncture needle for surgical suture gripping (30) to be projected from the distal end of the puncture needle for surgical suture gripping (30) being provided on the proximal end side of the puncture needle for surgical suture gripping (30).

Description

TECHNICAL FIELD[0001]The present invention relates to a medical instrument which is used when a catheter is transcutaneously inserted into an abdomen viscus. Particularly, the present invention relates to a medical instrument which is used to fix the front abdominal wall and the splanchnic wall to each other for facilitating insertion of a catheter in endoscopic gastrostomy which is carried out for such a purpose as nutrient supply, body fluid draining, or the like.BACKGROUND ART[0002]Conventionally, for patients who need long-term administration of nutritions, laparotomic gastrostomy has been carried out. However, a general gastrostomy technique involves excessive surgical invasiveness, thus, depending upon the condition of the patient, it is often impossible to make operation. Then, recently, gastrostomy techniques which minimize the surgical invasiveness have been devised, and a variety of medical instruments for accomplishing them have been proposed.[0003]For example, the presen...

AI Technical Summary

Benefits of technology

[0004]However, even with the aforementioned prior art invention, for carrying out a general gastrostomy, there has been a need for one operator, one endoscope operator, and one assistant for manipulating the medical instrument, and in a hospital facility where no endoscope operator is available, it has been difficult to carry out gastrostomy. In addition, the personal expenses required have been high. Therefore, about the medical instrument, there has been a demand for further simplifying the operation to improve the convenience, thereby to allow gastrostomy to be performed with ease even in a hospital facility where no endoscope operator is available, and reduce the personal expenses which would be required.

[0005]The present invention has been made in view of such problems which have been faced by the prior art, and is intended to provide a medical instrument with which the operation of sequentially feeding out the surgical suture inserted into the inside of the puncture needle for surgical suture insertion toward the distal end thereof, and the operation of projecting the annular member of the stylet that is accommodated in the inside of the puncture needle for surgical suture gripping, from the distal end thereof, or withdrawing the projected annular member can be easily carried out even by one hand, whereby only one operator is capable of performing ligation and endoscope manipulation, which allows only one operator or one operator and an assistant to efficiently carry out the operation in safety.

Problems solved by technology

However, even with the aforementioned prior art invention, for carrying out a general gastrostomy, there has been a need for one operator, one endoscope operator, and one assistant for manipulating the medical instrument, and in a hospital facility where no endoscope operator is available, it has been difficult to carry out gastrostomy.

In addition, the personal expenses required have been high.

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